Flight Controls

Question 1

Flight controls are ________ controlled and _________ actuated

Answer 1

Electrically, hydraulically

Question 2

Which controls have mechanical linkages to flight controls

Answer 2

Rudder and THS (trimmable horizontal stabilizer)

Question 3

Which spoilers are used for

1. Roll
2. Speed brake
3. Ground spoilers

Answer 3

1. 2-5
2. 2-4
3. 1-5

Question 4

What warnings will you get if both pilots try to use their side sticks

Answer 4

“Dual input” plus flashing green

Question 5

How can you take over controls from the other pilot.
How long must you do this in order to let go (and still have priority)
What are the warnings

Answer 5

Hold the takeover button on side stick .
If held for over 40 sec, the other stick is locked out
Red arrow and “priority left/right”

Question 6

What does a green light signify while holding the priority button

Answer 6

Other sidestick is not in neutral

Question 7

Which ELAC usually controls
1. Elevator
2. Ailerons

Answer 7

1. Nr2
2. Nr1

Question 8

Rudder use by the pilot is ________ controlled while yaw damper, trim, and turn coordination is ______

Answer 8

Mechanical. Electric

Question 9

What will the ailerons do with flaps down

Answer 9

Go into droop mode, 5 degrees down

Question 10

What happens if you try to extend spd brakes in conf full

Answer 10

Nothing (it’s inhibited)

Question 11

What scenarios will inhibit the use of speed brakes (or retract them)

How can you regain the use of speed brakes

Answer 11

aFloor, aProt, thrust above MCT, conf full, failed elevator

Reset spd brake lever, wait 10 sec

Question 12

What is the approximate speed brake retraction above 315kts (from full)

Answer 12

25 sec

Question 13

During flight in normal law, what does the sidestick command in pitch and roll

Answer 13

Pitch: load factor
Roll: roll rate

Question 14

Up to what bank angle will the flight control computers maintain the bank angle with release of the stick

Answer 14

33 degrees

Question 15

Normal law protections are how many degrees for:
Bank
Pitch up
Pitch down

Answer 15

67
30 (down to 20 with flaps full and slow speed)
15

Question 16

What happens during flare in normal law at 50 and 30 feet

Answer 16

50 feet: flare mode active, ths freezes, elevator becomes direct control, computer saves pitch attitude

30 feet: computer starts a gradual pitch command to -2 degrees (to simulate conventional ac)

Question 17

What are load factor protections

Flaps up
Flaps down

Answer 17

+2.5 -1

+2 -0

Question 18

When do flight directors disappear with excessive pitch

Answer 18

25 up 13 down

Question 19

What are the 4 thresholds for low speed protection

Answer 19

Vls, lowest selectable speed

aProt transit to sidestick AOA demand, the AOA the AC will return to with neutral stick

aFloor AOA where A/THR engages TOGA

aMAX full aft sidestick, AOA just before stall

Question 20

When is aFloor available (altitudes)

Answer 20

From liftoff to 100’ before landing

Question 21

What happens during high speed prot

Bank angle limit
Bank angle return to neutral
Pitch

Answer 21

Bank angle limit reduced to 40
Neutral sidestick reduces bank to 0
Gradual pitch up command

Question 22

When is low energy warning triggered
Envelope
Aural alert

Answer 22

100-2000 RH + flaps 2-full
Speed x3

Question 23

In normal law with full sidestick deflection, what is the max roll rate

Answer 23

15 deg/s

Question 24

What are the 4 possible flight control laws

Answer 24

Normal
Alternate (with and without protections)
Direct
Mechanical backup

Question 25

What does the sidestick command in pitch and roll under alternate law

Answer 25

Pitch still load factor
Roll: direct roll control

Question 26

In alternate law with reduced protections, what replaces low/high speed prot

Answer 26

Low high speed stability
Introduces a small pitch up/down moment at low/high speeds, but can be overriden

Question 27

When is direct law normally entered, when flying in alternate law

What changes

Answer 27

With gear down

Pitch is now direct control
Trim is manual
All protections are lost

Question 28

What happens to yaw damper and turn coordination outside of normal law

Answer 28

They are gone, have to use rudder in turns etc

Question 29

What happens when:
Abnormal attitude law is activated (to pitch, roll, yaw, trim)

After the aircraft has returned to normal flight

Gear is selected down later in the flight

Answer 29

Alternate law with: Pitch with no load factor limit, direct bank, mechanical yaw, no auto trim

Pitch/yaw returns to normal alternate law without reduced protections

Aircraft Remains in alternate law

Question 30

What stops slats/flaps in case of uncommanded movement, over speed and asymmetry

Answer 30

Wingtip brakes

Question 31

How many leading edge slats are there

Answer 31

5

Question 32

What’s the difference between setting flaps 1 on the ground and in flight

Answer 32

In flight, slats 1 only

On ground slats 1 + flaps 1

Question 33

What is A-Lock

Answer 33

Prevents slat retraction to zero at low speeds

Question 34

Slap/Flap speed limits

1
1+F
2
3
Full

Answer 34

230
215
200
185
177

Question 35

Max flaps extension altitude

Answer 35

20,000’

Question 36

What are the criteria to enter abnormal attitude law?
Pitch
Bank
Speed
AOA

Answer 36

Pitch more than 50 up or 30 down (40 or 20 with some ADC failures)
Bank more than 105 degrees
Speed less than 70-90 (depends on pitch), or more than 440 /M.91
AOA above 40 degrees

Question 37

If taking off with conf flaps 1+f, at what speeds do the flaps automatically retract

Answer 37

210kts

Question 38

The 2 Slat Flap Control Computer have how many channels each?

What happens if one computer fail?

If one channel fails?

Answer 38

2 channels, one slat channel and one flap channel

Slats/flaps will move at half speed

The slats or flaps controlled by that channel will be slow

Question 39

Direct law is usually entered by lowering the gear. If both LGCIU are faulty, when will direct law activate? (Also Sec 1,2 and 3 failure)

Answer 39

At Conf 2